.TH CVT 1 "xorg-server 1.17.3" "X Version 11"
.SH NAME
cvt - calculate VESA CVT mode lines
.SH SYNOPSIS
.B cvt
.RB [ \-v | \-\-verbose ]
.RB [ \-r | \-\-reduced ]
.I h-resolution
.I v-resolution
.RB [ refresh ]
.SH DESCRIPTION
.I Cvt
is a utility for calculating VESA Coordinated Video Timing modes.  Given the
desired horizontal and vertical resolutions, a modeline adhering to the CVT
standard is printed. This modeline can be included in Xorg
.B xorg.conf(5)
.

.SH OPTIONS
.TP 8
.BR refresh
Provide a vertical refresh rate in Hz.  The CVT standard prefers either 50.0,
60.0, 75.0 or 85.0Hz.  The default is 60.0Hz.
.TP 8
.BR \-v | \-\-verbose
Warn verbosely when a given mode does not completely correspond with CVT
standards.
.TP 8
.BR \-r | \-\-reduced
Create a mode with reduced blanking.  This allows for higher frequency signals,
with a lower or equal dotclock. Not for Cathode Ray Tube based displays though.

.SH "SEE ALSO"
xorg.conf(5), gtf(1)
.SH AUTHOR
Luc Verhaegen.
.PP
This program is based on the Coordinated Video Timing sample
implementation written by Graham Loveridge. This file is publicly
available at <http://www.vesa.org/Public/CVT/CVTd6r1.xls>. CVT is a
VESA trademark.
